What feature causes the wolverine to be an outlier within its immediate Family Mustelidae?

Answer

Its immense size and bulk compared to relatives like ferrets or martens.

While the Family Mustelidae is characterized generally by relatives sharing traits like long, slender bodies and strong musk glands, the wolverine stands out significantly due to its substantial size and bulk. The text explicitly notes that the wolverine is the largest terrestrial mustelid. This significant physical difference contrasts sharply with many of its closer relatives, such as slender members of the *Mustela* genus, martens, or ferrets. Despite these proportional differences, the shared ancestry is still evident through other underlying characteristics linking them back to the Mustelidae family.

What feature causes the wolverine to be an outlier within its immediate Family Mustelidae?
taxonomyanimalclassificationwolverine